When I stumbled upon this book written by John E. Douglas, the FBI criminal profiler who served as an inspiration for Mindhunter (a Netflix series), I knew that I had to read it. Not only am I a huge fan of the show, but I also have an interest in true crime. Douglas has talked to some of the most infamous criminals - mostly murderers - in the United States and his recounts of these meetings are phenomenal. He takes time to explain why murders commit the heinous crimes they do while walking the reader through four key interrogations he has led. I want to add that there is some content in this title that is disturbing. Douglas does share some graphic descriptions of violence and readers should take note of that before diving in.